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Unformatted text preview: u = ln x and then use integration by parts 5. Find R cos 2 ( x ) dx . Hint: Use integration by parts. You will end up with something in terms of R sin 2 ( x ) dx . From there, you can use the wellknown identity cos 2 ( x ) + sin 2 ( x ) = 1 to replace the sin 2 ( x ) with something in terms of cos 2 ( x ). You will have an equation with your integral on both sides. You can rearrange and solve for the integral you are looking for. You might also want to look at Section 7.1, Example 6 in the text book....
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This note was uploaded on 01/26/2012 for the course ECON 401 taught by Professor Burbidge,john during the Fall '08 term at Waterloo.
 Fall '08
 Burbidge,John

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